Mustang owners are a passionate group, devoted to their sporty cars. They even have their own annual holiday -- National Mustang Day, which falls on April 17 to mark the first time in 1964 that the original Mustang production car was revealed. Here, a 1965 Ford Mustang convertible is shown in Wimbledon White Ford

The sixth-generation, redesigned 2015 Mustang. Ford

The 1963 Ford Special Falcon: A prototype of the upcoming Mustang on the Falcon chassis before the
name was final. At this time it was referred to as the “Special
Falcon” and had Cougar badges, one of names under consideration.
Ford

Company head Henry Ford II with the 1964 1/2 Mustang Ford at the car's unveiling at the New York World's Fair in Flushing Meadows, N.Y. on April 17, 1964. Ford

The 1965 Ford Mustang hardtop on display in the Ford Pavilion at the 1964 New York World's Fair where the car was introduced April 17, 1964. Ford

1964 Ford Mustang ad from the New York World's Fair. Ford

Ad photo for the 1965-model Mustang: By
June 1964, Mustang has three body styles -- fastback, hardtop and
convertible -- with four engine options. Ford

A 2010 photo of Gail Wise, the first known retail buyer of a Mustang, with her 1965 convertible bought in Chicago. She still owns it and it has been restored. Ford

1979 Ford Mustang Cobra:Mustang was completely redesigned for the third-generation model in 1979. The quickest 1979 model was the Cobra with a new turbo 2.3-liter inline four-cylinder, a first for Mustang Ford

1980 Ford Mustang "convertible":The 1980 Mustang hardtop offered a padded roof that gave it the look of a convertible, a body style that had not been available since 1973. Ford

1982 Ford Mustang GT:Performance made a comeback with the return of the Mustang GT with a 5.0-liter, 160 hp. V-8. Ford

1984 Ford Mustang SVO:After establishing the Special Vehicle Operations (SVO) group to run Ford motorsports, SVO developed a high-performance Mustang for 1984 with retuned suspension, bigger brakes and a turbo 2.3-liter, 175 hp. four-cylinder. Ford

1985 Ford Mustang GT Convertible: The ragtop model returned to the Mustang lineup in 1983 and in 1985, the GT received an upgraded 5.0-liter V-8 with output bumped to 210 hp., the first Mustang at that level since the early-1970s Ford

1987 Ford Mustang GT convertible: The 2007 Mustang was redesigned with flush headlamps
and new taillamps. The GT continued with a fuel-injected 5.0-liter V-8. Ford

25th anniversary model 1990 Ford Mustang convertible with and orginal 1965 Mustang convertible. Mustang almost became a
front-drive coupe just two years earlier. Ford

1990 Ford Mustang LX: – The 5.0 LX debuted and was available
until 1993. Using the same 5.0-liter V8 and upgraded brakes and
suspension as the flashier GT, the subtle but
fast model became the most popular pony car. Ford

1993 Ford Mustang Cobra: – The new Ford Special Vehicle Team (SVT) debuted its first
model in 1993, the 235-hp. SVT Cobra with upgraded brakes and
suspension.
Ford

1994 Ford Mustang Cobra coupe: The new fourth-generation Mustang was redesigned in 1994 with classic 1960s-model styling cues such as the side scoops, tri-bar taillamps
and a pony emblem in the grille. Ford

1996 Ford Mustang GT coupe: The Ford small-block V-8 that had powered Mustang
in various forms since 1964 was replaced in 1996 by the new 4.6-liter single-overhead-cam “Modular” V-8. Ford

2001 Ford Mustang Bullitt GT: Ford introduced the "Bullitt" edition for 2001 that was inspired by the 1968 Mustang GT driven by
Steven McQueen in the 1968 film. The was the same Highland
Green and got suspension and engine upgrades.
Ford

2002 Ford Mustang GT Premium convertible:The
2002 GT was available with the five-spoke aluminum wheels originally
used on the car in the movie "Bullitt." Ford

2002 Ford SVT Mustang Cobra: Only 300 of the 2002 Mustang SVT Cobra R models were built.
With its rear wing and dome hood, the track special easily distinguishable. It has a 385-hp. DOHC 5.4-liter V-8 and six-speed
manual. Ford